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文章介绍了超重车作用下老旧双曲拱桥的计算原则和计算方法,结合工程实例,对某老旧双曲拱桥进行了超重车辆通行评估和静力试验。通过静力试验,掌握了双曲拱桥活载作用下的受力性能,并与理论计算结果进行了对比分析。分析计算结果表明,超重车作用下,桥梁承载能力满足要求。静力试验结果表明,双曲拱桥拱上建筑作用效果明显,但拱顶横向联系较弱,安全性不足。
This paper introduces the calculation principle and calculation method of the old double-curved arch bridge under the action of over-weight vehicles. With the engineering examples, it evaluates and tests the overweight vehicle passing and the static test of an old double-curved arch bridge. Through the static test, the mechanical behavior of the double-curved arch bridge under the live load is grasped and compared with the theoretical calculation results. Analysis and calculation results show that under the action of overweight vehicles, the bearing capacity of bridge meets the requirements. The static test results show that the effect of the arch on the arch construction is obvious, but the horizontal connection of the arch is weak and the safety is not enough.